EPDM gaskets vs. TPE gaskets is a comparison that engineers who design environmental seals need to make. Ethylene propylene diene monomer (EPDM) and thermoplastic elastomers (TPE) both resist water, weather, ozone, and sunlight. These gasket materials also withstand a wide range of outdoor temperatures and are available in compounds that meet specific industry standards. Both EPDM and TPE come in sponge and solid profiles and support water jet cutting, gasket bonding, and adhesive taping.

Contact Elasto Proxy if you’re a  manufacturer who is comparing EPDM gaskets vs. TPE gaskets and looking for industrial rubber products in low-to-medium volume quantities. We are a rubber fabricator and distributor that specializes in custom sealing solutions and that offers value-added services such as kitting, custom packaging, and parts marking. As the article shows, Elasto Proxy also helps engineers with material selection, a key consideration for successful sealing.

EPDM Gaskets

EPDM gaskets are made of a synthetic, weather resistant rubber that is a popular choice for door and window seals. EPDM exhibits superior resistance to ultraviolet (UV) light and maintains its flexibility at low temperatures, a concern in cold-weather climates. EPDM gaskets can have a steel core for reinforcement and offer a high degree of electrical insulation. For greater compressibility than solid seals can provide, EPDM foam rubber in hollow shapes are sometimes used.

The typical working temperature range for EPDM gaskets is from -50°F to +300°F (-45°C to 150°C) and up to +355°F (+180°C) in steam. The table blow describes EPDM’s main properties.

Compression Set

Good

Strength Properties

Good

Low Temperature Properties

Good

Abrasion Resistance

Good

Gas Permeability

Fair

Weather Resistance

Excellent

Ozone Resistance

Excellent

Chemical Resistance

Good

Heat Resistance

Excellent

Flame Resistance

Poor

Elasto Proxy offers fire-rated EPDM bulb trim, a type of gasketing, that meets industry requirements for flame, smoke, and toxicity (FST). Our fire-resistant gasket materials are ideal for mass transit vehicles such as buses, subways, and railcars. EPDM gaskets are also available in compounds that provide UL 94 flame resistance. EPDM costs less than TPE, but EPDM rubber is not recyclable. For sustainability and other important reasons, some manufacturers are now replacing EPDM with TPE.

TPE Gaskets

TPE gaskets are made of a group of rubber-like materials that combine the processing strengths of thermoplastics with the flexibility of thermoset rubbers. ISO 18064:2014 establishes six classes of TPEs based on their main ingredients.

  • Styrenic block copolymers, TPS (TPE-s)
  • Thermoplastic polyolefinelastomers, TPO (TPE-o)
  • Thermoplastic Vulcanizates, TPV (TPE-v or TPV)
  • Thermoplastic polyurethanes, TPU (TPU)
  • Thermoplastic copolyester, TPC (TPE-E)
  • Thermoplastic polyamides, TPA (TPE-A)
  • Not classified thermoplastic elastomers (TPZ)

Most EPDM profiles are black, but TPE profile are available in just about any color you can imagine – including metallic and translucents. Custom colors support distinctive designs, but profiles with multiple or different colors also offer advantages. For example, a TPE profile with multiple colors can use one of the colors as a visual cue to show installers where to drill holes. To support stocking and picking, you can specify smaller profiles in one color and larger profiles in another.   

Choose TPE gaskets if you need recyclable materials or fully non-metal parts. Instead of a steel core, TPE seals from Elasto Proxy can use a solid interior plastic. TPE’s advantages include flexibility, shock absorption, and slip, weather, and ozone resistance. Along with cost, the disadvantages of TEP gaskets include their relatively poor recovery when exposed to heat and compression.     

Compare EPDM Gaskets vs. TPE Gaskets 

Elasto Proxy can help you to review your application requirements and compare EPDM gaskets vs. TPE gaskets across parameters such as cost, environmental resistance, and sustainability. Our customers include manufacturers agricultural, forestry, construction, emergency vehicle, utility vehicle, and other market segments.

If you’re a manufacturer who needs help comparing EPDM gaskets vs. TPE gaskets, contact us

Leave a Reply

Close Menu